Special Variables

The following variables are global and should be localized in subroutines:$_ The default input and pattern-searching space.$. The current input line number of the last filehandle that was read.$/ The input record separator, newline by default. May be multicharacter.$, The output field separator for the print operator.$” The separator that joins elements of arrays interpolated in strings.$\ The output record separator for the print operator.$# The output format for printed numbers.$* Set to 1 to do multiline matching within strings.
see the m and s modifiers in Search and Replace Functions.$? The status returned by the last `…` command,
pipe close or system operator. ($CHILD_ERROR) Status-Nummer from last System calls$] The perl version number, e.g., 5.001. Version des Perl-Interpreters (z.B. 5.003)$[ The index of the first element in an array, and of the first character in a substring. Default is 0.$; The subscript separator for multidimensional array emulation. Default is “\034”.$! If used in a numeric context, yields the current value of errno.
If used in a string context, yields the corresponding error string.
($OS_ERROR,$ERRNO) Fehlerummer oder -meldung (je nach Kontext) from last system calls$@ The Perl error message from the last eval or do EXPR command.
error message from last eval()-Aufrufs Variables, die nicht mehr verwendet werden sollten$: The set of characters after which a string may be broken to fill continuation fields (starting with ^) in a format.
list of characters, an deren Stelle in einem String dieser getrennt werden darf.
(zur Aufsplittung bei Ausgabe von längeren Texten über mehrere Zeilen)$0 The name of the file containing the Perl script being executed.
May be assigned to. Name des gerade laufenden Programms.$$ The process ID of the currently executing Perl program.
Altered (in the child process) by fork. Prozeß-Nummer von Perl

$^A The accumulator for formline and write operations.$^D The debug flags as passed to perl using -D.$^F The highest system file descriptor, ordinarily 2.$^I In-place edit extension as passed to Perl using -i.$^L Formfeed character used in formats. Zeichenkette,
die vor jedem Seitenkopf ausgegeben wird (z.B. Seitenvorschub auf einem Drucker).$^P Internal debugging flag.$^T The time (as delivered by time) when the program started.
This value is used by the file test operators -M, -A and -C.
Zeitpunkt, an dem das aktuelle Skript gestartet wurde (unter UNIX: Anzahl der Sekunden$^W The value if the -w option as passed to Perl.
Zeigt an, ob Warnungen ausgegeben werden sollen (z.B. durch die Option “-w”).$^X The name by which the currently executing program was invoked. Name des Perl-Interpreters

The following variables are context dependent and need not beocalized:

$% The current page number of the currently selected output channel.
$= The page length of the current output channel. Default is 60 lines. Anzahl der Zeilen pro Seite$- The number of lines remaining on the page. Anzahl der restlichen Zeilen auf der aktuellen Seite$~ The name of the current report format.$^ The name of the current top-of-page format.$| If set to nonzero, forces a flush after every write or print on the currently selected output channel. Default is 0.$ARGV The name of the current file when reading from <>.

The following variables are always local to the current block:

$& The string matched by the last successful pattern match.$` The string preceding what was matched by the last successful match.$’ The string following what was matched by the last successful match.$+ The last bracket matched by the last search pattern.$1…$9… Contain the subpatterns from the corresponding sets of parentheses in the last pattern successfully matched. $10…
and up are only available if the match contained that many subpatterns.